DETERMINATION OF THE DEGREE OF ORDER OF MESOMORPHIC p-n-ALKOXYBENZOIC ACIDS BY IR DICHROISM METHODReportar como inadecuado




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Abstract : Ten homologues of a series of p-n-alkoxybenzoic acids have been studied using the IR-dichroism method. The degree of order, S, in the liquid crystal state, depending on the temperature and the mesophase type, has been calculated. It is shown that the value of S is greater for homologues with an even number of carbon atoms in the alkoxy group than for those with an odd number of carbon atoms. In the mesophase obtained by the cooling of the isotropic phase the value of S is higher than that in the mesophase obtained by heating of solid.





Autor: I. Konstantinov V. Khodzhaeva M. Shishkina Y. Amerik

Fuente: https://hal.archives-ouvertes.fr/



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